The 34-year-old Dunn and 30-year-old Hartwell, were killed early Monday. Police say Dunn's Porsche might have been traveling as fast as 100 mph when it crashed 2:38 a.m. near the Pottstown exit on Route 322.

Hartwell’s house is less than 100 yards from the exit ramp that Dunn was presumably trying to turn onto before he lost control of the vehicle.

Dunn, who appeared on MTV shows “Jackass” and “Viva La Bam” and the three “Jackass” big-screen adaptations, was recently engaged to be married, Bam Margera’s father Phil Margera told NBC Philadelphia.

Hartwell served in the U.S. Marine Corps and was recently married, according to Phil Margera. Hartwell also worked as a production assistant on the movie "Jackass Number Two" and starred in Bam Margera's movie "Minghags."